function drupal_json_encode

Converts a PHP variable into its JavaScript equivalent.

We use HTML-safe strings, with several characters escaped.

See also

drupal_json_decode()

drupal_json_encode_helper()

Related topics

File

includes/common.inc, line 5283

Code

function drupal_json_encode($var) {
  // The PHP version cannot change within a request.
  static $php530;
  if (!isset($php530)) {
    $php530 = version_compare(PHP_VERSION, '5.3.0', '>=');
  }
  if ($php530) {
    // Encode <, >, ', &, and " using the json_encode() options parameter.
    return json_encode($var, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP | JSON_HEX_QUOT);
  }
  // json_encode() escapes <, >, ', &, and " using its options parameter, but
  // does not support this parameter prior to PHP 5.3.0.  Use a helper instead.
  include_once DRUPAL_ROOT . '/includes/json-encode.inc';
  return drupal_json_encode_helper($var);
}